// Code for D50 white Ref
//public static CIEXYZ RGBtoXYZ(int red, int green, int blue)
//{
// // normalize red, green, blue values
// double rLinear = (double)red/255.0;
// double gLinear = (double)green/255.0;
// double bLinear = (double)blue/255.0;
// // convert to a sRGB form
// double r = (rLinear > 0.04045)? Math.Pow((rLinear + 0.055)/(1 + 0.055), 2.2) : (rLinear/12.92) ;
// double g = (gLinear > 0.04045)? Math.Pow((gLinear + 0.055)/(1 + 0.055), 2.2) : (gLinear/12.92) ;
// double b = (bLinear > 0.04045)? Math.Pow((bLinear + 0.055)/(1 + 0.055), 2.2) : (bLinear/12.92) ;
// // Corrections received by from Rob2412
// return new CIEXYZ(
// (r * 0.4360747 + g * 0.3850649 + b * 0.1430804),
// (r * 0.2225045 + g * 0.7168786 + b * 0.0606169),
// (r * 0.0139322 + g * 0.0971045 + b * 0.7141733));
//}
/// <summary>
/// Converts RGB to CIEXYZ.
/// </summary>
public static CIEXYZ RGBtoXYZ(RGB rgb)
{
return RGBtoXYZ(rgb.Red, rgb.Green, rgb.Blue);
}
/// <summary>
/// Converts RGB to YUV.
/// </summary>
public static YUV RGBtoYUV(RGB rgb)
{
return RGBtoYUV(rgb.Red, rgb.Green, rgb.Blue);
}
/// <summary>
/// Converts RGB to HSL.
/// </summary>
public static HSL RGBtoHSL(RGB rgb)
{
return RGBtoHSL(rgb.Red, rgb.Green, rgb.Blue);
}
/// <summary>
/// Converts RGB to CIELab.
/// </summary>
public static CIELab RGBtoLab(RGB rgb)
{
return XYZtoLab(RGBtoXYZ(rgb.Red, rgb.Green, rgb.Blue));
}
/// <summary>
/// Converts YUV to RGB.
/// </summary>
/// <param name="y">Y must be in [0, 1].</param>
/// <param name="u">U must be in [-0.436, +0.436].</param>
/// <param name="v">V must be in [-0.615, +0.615].</param>
public static RGB YUVtoRGB(double y, double u, double v)
{
var rgb = new RGB();
rgb.Red = Convert.ToInt32((y + 1.139837398373983740*v)*255);
rgb.Green = Convert.ToInt32((y - 0.3946517043589703515*u - 0.5805986066674976801*v)*255);
rgb.Blue = Convert.ToInt32((y + 2.032110091743119266*u)*255);
return rgb;
}
/// <summary>
/// Converts RGB to CMYK
/// </summary>
public static CMYK RGBtoCMYK(RGB rgb)
{
return RGBtoCMYK(rgb.Red, rgb.Green, rgb.Blue);
}
/// <summary>
/// Converts RGB to CIELab.
/// </summary>
public static CIELab RGBtoLab(RGB rgb)
{
return(XYZtoLab(RGBtoXYZ(rgb.Red, rgb.Green, rgb.Blue)));
}
// Code for D50 white Ref
//public static CIEXYZ RGBtoXYZ(int red, int green, int blue)
//{
// // normalize red, green, blue values
// double rLinear = (double)red/255.0;
// double gLinear = (double)green/255.0;
// double bLinear = (double)blue/255.0;
// // convert to a sRGB form
// double r = (rLinear > 0.04045)? Math.Pow((rLinear + 0.055)/(1 + 0.055), 2.2) : (rLinear/12.92) ;
// double g = (gLinear > 0.04045)? Math.Pow((gLinear + 0.055)/(1 + 0.055), 2.2) : (gLinear/12.92) ;
// double b = (bLinear > 0.04045)? Math.Pow((bLinear + 0.055)/(1 + 0.055), 2.2) : (bLinear/12.92) ;
// // Corrections received by from Rob2412
// return new CIEXYZ(
// (r * 0.4360747 + g * 0.3850649 + b * 0.1430804),
// (r * 0.2225045 + g * 0.7168786 + b * 0.0606169),
// (r * 0.0139322 + g * 0.0971045 + b * 0.7141733));
//}
/// <summary>
/// Converts RGB to CIEXYZ.
/// </summary>
public static CIEXYZ RGBtoXYZ(RGB rgb)
{
return(RGBtoXYZ(rgb.Red, rgb.Green, rgb.Blue));
}
/// <summary>
/// Converts RGB to YUV.
/// </summary>
public static YUV RGBtoYUV(RGB rgb)
{
return(RGBtoYUV(rgb.Red, rgb.Green, rgb.Blue));
}
/// <summary>
/// Converts RGB to CMYK
/// </summary>
public static CMYK RGBtoCMYK(RGB rgb)
{
return(RGBtoCMYK(rgb.Red, rgb.Green, rgb.Blue));
}
/// <summary>
/// Converts RGB to HSB.
/// </summary>
public static HSB RGBtoHSB(RGB rgb)
{
return(RGBtoHSB(rgb.Red, rgb.Green, rgb.Blue));
}
